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Operating Partnerships (Details) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended	1 Months Ended		12 Months Ended	1 Months Ended
	Dec. 31, 2011 Camden Operating LP [Member]	Jan. 31, 2012 Oasis Martinique LLC [Member]	Dec. 31, 2011 Oasis Martinique LLC [Member]	Dec. 31, 2011 Camden Summit Partnership LP [Member]	Feb. 17, 2012 Redemption of Units [Member]	Feb. 17, 2012 Redemption of Units [Member] Camden Operating LP [Member]
Operating Partnerships [Line Items]
Percentage of real estate properties held with operating partnership	10.00%			23.00%
Common and preferred limited partnership interest	89.80%			94.10%
General partnership interest	1.00%			1.00%
Limited partnership units	1,100,000		300,000	1,100,000
Converted shares		100,000
Cumulative redeemable perpetual preferred units, value	$ 100.0
Cumulative redeemable perpetual preferred units, dividend rate	7.00%				7.00%
Temporary equity, shares outstanding						4,000,000
Preferred Stock, Redemption Price Per Share					$ 25.00
Aggregate redemption price					100.0
Series B issuance costs					$ 2.1
Resultant number of common shares from exchange of operating interest units			200,000
Units Converted To Shares During Period		200,000

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Percentage of real estate properties held with operating partnership.

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